Function testBypass

tests/client_deess_test.cpp:88–106

// ── Tests ──────────────────────────────────────────────────────────────

void testBypass()
{
    ClientDeEss d;
    d.prepare(kSampleRate);
    d.setEnabled(false);

    const int frames = 1024;
    auto ref = makeTone(5000.0, frames, dbToLin(-6.0f));
    auto out = ref;
    processBlocks(d, out.data(), frames);

    float maxDiff = 0.0f;
    for (size_t i = 0; i < out.size(); ++i)
        maxDiff = std::max(maxDiff, std::fabs(out[i] - ref[i]));

    report("bypass: disabled passes through unchanged",
           maxDiff < 1e-6f,
           "maxDiff=" + std::to_string(maxDiff));
}

// Low-frequency signal (below the sidechain band) should NOT trigger
// attenuation even at loud levels.